Immunogen sequence: SEAGTAFIQT QQLHAAMADT FLEHMCRLDI DSPPITARNT GIICTIGPAS RSVETLKEMI KSGMNVARLN FSHGTHEYHA ETIKNVRTAT ESFASDPILY RPVAVALDTK GPEIRTGLIK GSGTAEVELK KGATLKITLD NAYMEKCDEN ILWLDYKNIC KVVEVGSKIY VDDGLISLQV KQKGADFLVT EVENGGSLGS KKGVNLPGAA V P